Fishing net for steam trawlers



K. KUIJ PER AND H. BAKKER.

FISHING NET FOR STEAM TRAWLERS.

APPLICATION FILED JULY 30, I921.

Patenmd ()ct mw o Patented Get. 31, 1922.

KLAAS KULTPER AND HERMAN BAKKER, 0F TJ'IEUIDEN,

(GRANTED UK NETHERLANDS,

FISHING NET FOR STEAM TRAWLERS.

Application filed July 30, 1921.

DER TlIE PROVISIONS OF THE ACT OF MARCH 3, 1921, 41 STAT.

T 0 all to 710m it may concern-.-

Be it known that we, KLAAs HERMAN BAKKER,

KUIJPER and subjects of the Queen of the Netherlands, both residing at Llmuiden,

, 5 the Netherlands, have invented certain. new

and useful Improvements in and Relating to Fishing Nets f which we have filed Netherlands, April ruary 1 1th, 1919;

and filed Feb. 26th, 1919;

or Steam Trawlers (for applications in. the 22nd, 1915, granted Feb- Great Britain, granted Sweden, granted and filed December 30th, 1919; Belgium,

January 9th, 1920, Portugal, January granted and 6th, 1920) fication.

ranted and filed January 9th, 1920; Spain, gran-ted May 26th, 1920; 22nd, 1920, granted Feb- March 7th, 1921,

and Denmark, January This invention relates to fishing nets for steam trawlers.

Such nets, of an upper and back and knotted together.

as the lower part are composed of zoidal middle piece,

wings are secured and the pockets.

piece is handknitted this trapezoidal dropped at the sides in each A net made in this way,

ting the piece. however, possesses when dragging he as is well known,

b lly are composed a lower part, called the respectively, which are The upper part as well a trapeto one end of which the and to the other the cod The trapezoidal middle and in order to obtain shape half a mesh is row while knitthis disadvantage, that net through the water it will not assume a globular shape, but 1s stretched and elongated with the result that the net,

while being dragged through the water, oifers a great resistance to the same, which greatly affects the speed of travel of the trawler.

This invention now has for its object to provide an improved net for steam trawlers in which the above stated With eliminated.

disadvantage is this object in view the trapezoidal middle piece mentioned above,

is not made in one a plurality of secti tangular, crossways in ferent, but is counted vertically the di piece, but is divided into ons all of which are recthe number of meshes counted fferent sections being difthe same in all sections when These separate Sections Serial No. 488,631.

width of the net, this however, need not be done at the sides, but may be effected at several points at regular intervals in the coir. tre, or in other words, two meshes of the preceding section are joined to one mesh of the succeeding section. A net made in this manner retains its globular shape while being dragged through the water, which is apparently due to the regular manner in which the width is decreased thus offering less resistance to the water and consequently increasing the speed of the trawler.

A further advantage is that the greater portion of the net can be manufactured quite simply by mechanical means, as the rectangular sections can easily be made by machine.

The knotting together of the different sections and the knotting together of the upper and lower parts of the trawl must however, be done by hand.

One form of carrying this invention into efiect is illustrated by way of example in the accompanying drawing in which,

Fig. 1 represents a portion of the net showing two of the aforementioned sections knotted together,

Fig. 2 shows the upper the trawl, and

Fig. 3 the lower part or belly of the same.

In Fig. 2, showing the upper part of the net, the trapezoidal middle piece is divided into a plurality of separate sections some of them being distinguished by the reference numerals: 1, 2, 3, 4, 5 and 6. These sections originally are of rectangular shape, the first section having for instance 293 meshes counted crossways and 22 meshes counted from top to bottom, i. e., vertically. Section 2 has 280 meshes counted crossways and 22 meshes counted vertically, whereas section 3 has 260 meshes counted crossways and 22 counted from top to bottom, and so on, the width of the successive sections decreasing by a few meshes in each case so that the lowest section has for instance meshes counted crossways. The vertical dimensions or depth of the different sections may be the same throughout, they may however be varied, as for instance the case in part or back of sections 5 and 6, which in this particular example contain 45 rows of meshes counted from top to bottom. 7 and 8 indicate the wings, 9 the pockets and 10 the cod.

The lower part or belly of the trawl is shown in Fig. 3 and'is made in the same way as the upper part, only that the middle piece is made shorter. The upper and lower parts are knotted together at the sides.

Fig. 1 shows the manner in which the aforesaid sections, i. e., two, may be knotted together and also how the net is decreased in width. 11, 12 and 13 indicate the knots, which join the sections together, whereas at F 14., 15 and 16 it is shown how two meshes of the larger, 1. e., Wider section are joined to one mesh of the smaller, i. e., narrower section. This decrease of width is distributed over the whole breadth of the section and in the example shown this is done at every sixth mesh of the upper section so that in each case seven meshes of the lower and Wider section are joined. to six meshes of the upper and narrower section.

The distance between the points where the width is contracted depends on the difference in thenumber of'meshes counted crossways in the two respective sections and the width of the .upper section.

What we claim as our invention and de sire to secure by Letters Patent is:

KLAAS KUIJPER. HERMAN BAKKER. 

